Disable some GCC compiler:
Disable some GCC compiler:

before

zhihui@yuzu: ~$ ps -C mount_wokfs -o pid,vsz,rss,comm
  PID    VSZ   RSS COMMAND
 7458 18254489692 397780 mount_wokfs

after

zhihui@yuzu: ~$ ps -C mount_wokfs -o pid,vsz,rss,comm
  PID    VSZ   RSS COMMAND
15932 564924 34136 mount_wokfs

However, after I run iozone and self build, I still have:

zhihui@yuzu: ~$ ps -C mount_wokfs -o pid,vsz,rss,comm
  PID    VSZ   RSS COMMAND
 5480 1309824 843052 mount_wokfs

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/pfl,pscedu/slash2-stable,pscedu/pfl,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/pfl,pscedu/pfl,pscedu/slash2-stable